DOJ Invokes National Security to Defend xAI's Unpermitted Gas Turbines in NAACP Lawsuit

Jun 16, 2026

The Department of Justice is intervening to dismiss an NAACP lawsuit against Elon Musk's xAI, citing national security. The DOJ claims xAI's 57 unpermitted gas turbines in Mississippi power the Grok AI model, which is critical for Department of War operations. The NAACP sued over pollution from the turbines, which emit carcinogens in a region with already poor air quality. Environmental groups call the DOJ's move to defend a polluter "remarkable."

DOJ national security defense

▪The DOJ memorandum states that xAI's AI model, Grok, provides "critical support" for the Department of War's military operations.
▪The DOJ argues the lawsuit threatens "American national, economic, and energy security."
▪In its filing, the DOJ argued that the federal government should have the authority to stop environmental lawsuits brought by private citizens.
▪The U.S. Department of Justice is intervening to dismiss a lawsuit filed by the NAACP against Elon Musk's company, xAI.
▪According to the Department of Defense, Grok is one of four AI models supporting "mission-critical operations," including recent military strikes in Iran.

Unpermitted gas turbine operations

▪Elon Musk's company, xAI, is operating 57 unpermitted natural gas turbines at its data centers in Mississippi.
▪The turbines are located at xAI's Colossus and Colossus 2 data centers in Southaven, Mississippi, near the Tennessee border.
▪The number of turbines at xAI's facilities increased from 27 to 57 since April.
▪xAI claims its turbines are exempt from Mississippi air pollution regulations for one year because they are "mobile" and mounted on trailers.
▪The Southern Environmental Law Center contends that trailer-mounted turbines can be legally considered stationary and are therefore subject to federal regulation.

NAACP environmental lawsuit

▪An expert from Earthjustice described the DOJ's intervention on behalf of a "polluter" as "remarkable" and "unusually aggressive."
▪The NAACP is represented in the lawsuit by the Southern Environmental Law Center and Earthjustice.
▪The NAACP filed a lawsuit against xAI in April, alleging the company's unpermitted turbines violate the Clean Air Act.
▪The NAACP stated that the region, already one of the most polluted in the country, has suffered worse air quality since xAI's data centers began operating.

Air pollution health impacts

▪Formaldehyde exposure increases cancer risk, while PM2.5 has been implicated in conditions ranging from stroke to Alzheimer's disease.
▪Since April, the growth in the number of turbines has led to a 111 percent spike in nitrogen oxide emissions.
▪The emitted pollutants PM2.5, formaldehyde, and NOx have been linked to asthma and cardiovascular disease.
▪The increase in turbines has caused a corresponding rise in pollutants like PM2.5, formaldehyde, and oxides of nitrogen (NOx).

Future turbine expansion plans

▪Of the planned $2.8 billion expenditure, at least $2 billion is designated for "mobile gas turbines."
▪In an IPO filing, SpaceX announced plans to buy an additional $2.8 billion worth of gas turbines over the next three years for its AI data centers.